Frank, T., & Ray, D. (1979). Basic business and professional speech communication. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Frank, Ted, agus David Ray. Basic Business and Professional Speech Communication. Englewood Cliffs, NJ: Prentice-Hall, 1979.
Lua MLA (9ú heag.)Frank, Ted, agus David Ray. Basic Business and Professional Speech Communication. Prentice-Hall, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.